Epic Games Launcher version 19.0.0 does not start on Core 2 Duo CPUs due to lack of SSE4.2 support.

floyd_eg
Fri, 07 Nov 2025 03:04:42 +0000
Feedback & Requests

Launcher version 19.0.0 requires SSE4.2, which is not supported by Core 2 Duo processors, currently listed as minimum compatible requirements:

https://www.epicgames.com/help/en-US/epic-games-store-c-202300000001639/launcher-support-c-202300000001735/system-requirements-for-the-epic-games-launcher-a202300000014568

Steps to reproduce:

Attempt to launch the Epic Games Launcher v.19.0.0 on a system with a Core 2 Duo CPU (or any other CPU without SSE4.2 support) running Windows 10 x64.

Expected vs. actual results:

Expected: The launcher opens; Actual: The launcher does not even open.

Relevant lines on EpicGamesLauncher.log file:

Message dialog closed, result: Ok, title: Message, text: This CPU does not support a required feature (SSE4.2).
LogWindows: FPlatformMisc::RequestExit(0, FWindowsPlatformMisc::PlatformPreInit.CPUNotSupported)
LogWindows: FPlatformMisc::RequestExitWithStatus(0, 0, FWindowsPlatformMisc::PlatformPreInit.CPUNotSupported)

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